A Sculptra and Bellafill are both effective bio-stimulatory fillers capable of addressing the sunken areas on your cheeks and temples.
Sculptra, composed of poly-L-lactic acid, works gradually to stimulate collagen growth and improve skin texture and volume. While Sculptra has shown positive results for you, it's true that its effects typically last up to 2 years, necessitating repeat treatments.
On the other hand, Bellafill, which combines collagen gel and PMMA microspheres, provides both an immediate plumping effect and prolonged collagen growth over time. While Bellafill is commonly used for treating acne scars, it's equally effective in addressing facial volume loss. A key advantage is its long-lasting results, potentially enduring for 5 years or more.
In essence, Bellafill could be a suitable option if you're looking for a longer-lasting solution to Sculptra. However, this decision should be made in consultation with a skilled injector who can assess your specific needs and guide you accordingly.